ok...so i'm in the second day at 150mg. a day(50mg 3x a day) and i have had a headache for like 16 hours now. i get migraines from the neck injury, but i'm not suppose to take anything else with this stuff so i'm just suffering through rather than taking imitrex which i usually take or even asprin for that matter, i can't sleep for more than like two hours. from the last couple of posts, this medication sounds really horrible. anyone have this side effect and if so did it go away? this sucks!! i'm not gonna be able to function like this.